Is compression coating a completely dry process?

Compression coating is indeed a completely dry process. This technique involves applying a coating material to a core tablet through a method of compression without the use of liquids. The process utilizes mechanical force to form the coating around the tablet, ensuring that it remains solid and free from moisture.

The key aspect of compression coating is that it allows for the creation of multiple layers of differing compositions or functionalities while maintaining the integrity of the core. Since no aqueous or organic solvents are involved, it minimizes the risk of moisture-sensitive ingredients being exposed to liquid conditions, which can sometimes lead to degradation or undesired reactions. This characteristic makes it particularly advantageous for pharmaceuticals that require a controlled release or specific protectiveness due to moisture or environmental conditions.

While there may be processes that involve other methods, in the context of compression coating itself, it stands out as a method that is distinctly dry.